The owners of Sportspower Bunbury are pleading for answers in relation to three incidents from the past two weeks.
The store was targeted by shoplifters on Saturday, May 18 and Sunday, May 19.
Two women then stole items of clothing from the Sandridge Road premises, at 3.50pm on May 26.
CCTV footage shows staff attempting to stop the pair from taking the items.
One culprit dropped several items before fleeing the premises. The other managed to slip past a handful of employees with items in-hand.
Staff spotted the pair get into a silver vehicle and leave the area. Two males were in the car at the time.
Since purchasing Sportspower's Bunbury and Eaton Fair outlets five years ago, Ian Hayward and his wife, Kellie Hayward, have seen plenty of shoplifters come and go.
"It's very disappointing, it makes us very angry. We're a family-owned business, so stuff like this does hurt us," he said.
"Items can be recovered, but injuries etc. can be hard to recover from. As owners, we feel that our staff respect us for what we do.
"Our staff were fantastic last month - they went above and beyond our expectations. We don't expect them to put themselves in any danger, whatsoever.
"We want to reinforce that what they did was simply incredible."
Bunbury Police and the owners are calling upon the community for assistance.
"The police have sent out their alerts to try and identify who these people are," Mr Hayward said.
"If you do know them, please help us out.
"We also don't want this to happen to anyone else in the future."